Detailed explanation of how to solve the minimum value of a two-dimensional array column in Java

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java solution Minimum value of two-dimensional array column

Compare the minimum value of two-dimensional array column, form a new array and return it.

Implement the core algorithm without using IO

Input: {{5,6,1,16},{7,3,9}}

Output: {1,3}

import java.util.Arrays; 
 
public class Col { 
 
  public static int[] getColMin(int a[][]) { 
    int[] res = new int[a.length]; 
    for (int i = 0; i < a.length; i++) { 
      int[] s = a[i]; 
      Arrays.sort(s); 
      res[i] = s[0]; 
    } 
    return res; 
  } 
   
  public static void main(String args[]) { 
    // 写测试方法 
    int[][] a = { { 5, 6, 1, 16 }, { 7, 3, 9 }, { 2, 4, 56 } }; 
    int[] ss = getColMin(a); 
    for (int i = 0; i < ss.length; i++) { 
      System.out.print(ss[i] + " "); 
    } 
  } 
}

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